Relief Valves
Industrial Duty Relief Valves for Reliable Pressure Relief
Relief valves can be used as primary pressure control devices or secondary (safety) pressure relief devices. Many systems also use two relief valves, one set as the primary pressure control and the other set as a secondary relief.
When used as a primary pressure control device, the relief valve sets and maintains consistent system pressure. Excess flow is bypassed back to the pump inlet, tank, or drain when the system reaches the set pressure point.
When configured as a secondary pressure control device, the relief valve provides pressure relief if the primary pressure control valve malfunctions. The secondary relief valve will open to relieve the system pressure, protecting the pump and system from damage caused by over-pressurization. A secondary relief valve can save costly pump and system damage, and more importantly, it’s an added safety feature to protect those working around the equipment.
Product Range:
0 to 320 GPM, 0 to 10,000 PSI
Typical Usage:
Used for single pump, multiple pumps, nozzle, and gun applications.
Materials:
Available in brass, 304, and 316 stainless steel
Elastomers:
Medium nitrile buna (NBR), fluorocarbon (FPM), ethylene propylene diene monomer (EPDM), and more.
| Model | Min Flow | Max Flow | Min Pressure | Max Pressure | Inlet/Discharge Ports | Bypass Ports |
|---|---|---|---|---|---|---|
| 7190 | 0.00 GPM / 0.00 LPM | 6.50 GPM / 25.00 LPM | 400 PSI / 28 BAR | 5000 PSI / 345 BAR | 3/8" BSP(F) / 3/8" BSP(F) | 3/8" BSP(F) |
| 7693.100 | 0.00 GPM / 0.00 LPM | 10.50 GPM / 40.00 LPM | 232 PSI / 16 BAR | 2321 PSI / 160 BAR | 3/8" NPT(F) / 3/8" NPT(F) | 3/8" NPT(F) |
| 7694.100 | 0.00 GPM / 0.00 LPM | 10.50 GPM / 40.00 LPM | 406 PSI / 28 BAR | 4060 PSI / 280 BAR | 3/8" NPT(F) / 3/8" NPT(F) | 3/8" NPT(F) |
| 7630.100 | 0.00 GPM / 0.00 LPM | 10.50 GPM / 40.00 LPM | 507 PSI / 35 BAR | 5076 PSI / 350 BAR | 3/8" BSPP(M) / 3/8" BSPP(F) | 1/2" BSPP(F) |
| 997304 | 0.00 GPM / 0.00 LPM | 20.00 GPM / 75.70 LPM | 0 PSI / 0 BAR | 300 PSI / 20 BAR | 1/2" NPT(M) / 1/2" NPT(F) | 1/2" NPT(F) |
| 7537.100 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 406 PSI / 28 BAR | 2320 PSI / 160 BAR | 1/2" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| 7542.100 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 406 PSI / 28 BAR | 4060 PSI / 280 BAR | 1/2" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| 7196 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 100 PSI / 7 BAR | 7250 PSI / 500 BAR | 1/2" BSP(F) / 3/8" BSP(F) | 3/8" BSP(F) |
| 7590.100 | 0.00 GPM / 0.00 LPM | 52.80 GPM / 200.00 LPM | 218 PSI / 15 BAR | 2175 PSI / 150 BAR | 1" NPT(F) / 1" NPT(F) | 1" NPT(F) |
| 7595 | 1.00 GPM / 3.80 LPM | 53.00 GPM / 200.00 LPM | 260 PSI / 18 BAR | 2600 PSI / 180 BAR | 3/4" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| Model | Min Flow | Max Flow | Min Pressure | Max Pressure | Inlet/Discharge Ports | Bypass Ports |
|---|---|---|---|---|---|---|
| 7531.100 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 218 PSI / 15 BAR | 2175 PSI / 150 BAR | 1/2" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| 7533.100 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 406 PSI / 28 BAR | 4060 PSI / 280 BAR | 1/2" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| 7536.100 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 580 PSI / 40 BAR | 5800 PSI / 400 BAR | 1/2" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| Model | Min Flow | Max Flow | Min Pressure | Max Pressure | Inlet/Discharge Ports | Bypass Ports |
|---|---|---|---|---|---|---|
| 7034 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 400 PSI / 28 BAR | 2200 PSI / 155 BAR | 1/2" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| 7036 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 800 PSI / 55 BAR | 4000 PSI / 275 BAR | 1/2" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| 7037 | 0.00 GPM / 0.00 LPM | 21.00 GPM / 80.00 LPM | 3000 PSI / 207 BAR | 5700 PSI / 400 BAR | 1/2" NPT(F) / 1/2" NPT(F) | 1/2" NPT(F) |
| 890718 | 10.00 GPM / 38.00 LPM | 50.00 GPM / 189.00 LPM | 1000 PSI / 69 BAR | 8000 PSI / 550 BAR | 2" NPT(M) / 2" NPT(F) | 2" NPT(F) |
| 890709 | 20.00 GPM / 76.00 LPM | 60.00 GPM / 227.00 LPM | 1500 PSI / 103 BAR | 4000 PSI / 275 BAR | 2" NPT(F) / 2" NPT(F) | 2" NPT(M) |
| 890731 | 15.00 GPM / 56.00 LPM | 75.00 GPM / 284.00 LPM | 100 PSI / 7 BAR | 400 PSI / 28 BAR | 2" NPT(F) / 2" NPT(F) | 2" NPT(M) |
| 890700 | 30.00 GPM / 114.00 LPM | 180.00 GPM / 680.00 LPM | 1000 PSI / 70 BAR | 3000 PSI / 207 BAR | 2" NPT(F) / 2" NPT(F) | 2" NPT(M) |
| 890702 | 25.00 GPM / 95.00 LPM | 210.00 GPM / 795.00 LPM | 500 PSI / 35 BAR | 2000 PSI / 138 BAR | 2" NPT(F) / 2" NPT(F) | 2" NPT(M) |
| 890706 | 15.00 GPM / 57.00 LPM | 260.00 GPM / 984.00 LPM | 250 PSI / 17 BAR | 1000 PSI / 69 BAR | 2" NPT(F) / 2" NPT(F) | 2" NPT(M) |
| 890704 | 45.00 GPM / 170.00 LPM | 320.00 GPM / 1211.00 LPM | 500 PSI / 35 BAR | 2000 PSI / 138 BAR | 2" NPT(F) / 2" NPT(F) | 2" NPT(M) |